Draft-equalizer.



E. R. SPELLMAN.

DRAFT EQUALIZBR. APPLIOATION FILED MAY 1, 1913.

Patented Nov.11,1913.

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EDWARD R. SPELLMAN, OF WALLA WALLA, WASHINGTON.

DRAFT-nonnilrznn. t 1 Y To all whom/ may concern Be it known that I,EDWARD R. SPELLMAN, a citizen of fthe United States, and a resident ofVValla ldalla, in the county .of Walla "Walila `and 4State ofWashington, have invented la new and useful Improvement inDraft-Equalizers, `of which the following is a specification.

My invention `is `an improvement in .draft equalizers, and has for its.object to provide an Iequalizer of :the character speoilied, ,by means.of which live draft animals may be coupled together for vpulling `aplow and so arranged that the .draft will `be equally distributechand:the swingle-trees will be so balanced that the draft animals will pullin proper position `alongside 4each other` and with but `one draft'animal inthe tui-row.

In ythe drawings: Figure 1 is a top Vplan view :of .the equalizer, :andl? ig. 2 is a section on the sline2.-2 of Fig. 1 looking in thedirection of the arrows. i

The present embodiment of the invention comprises a plate l lof suitablematerial, having lits rearmend enlarged laterally as indicated at 2,.and provided with a transverse series of openings for connecting thesaid plate with the plow. The plate is also provided with a lateralextension 4, rat .one side edge, and bars 5 and 6 are connected with theplate, whilea bar 7 is `connected with Jthe extension.

The bar 5 is arranged above the plate and the bar 6 below the plate,both being near the front end thereof and the said bars 5 and 6 are heldinplace on the plate by means of a bolt S, and clips 9 and 10. Each ofthe clips 9 and 10 is oifset inwardly at its front end as shown at 11and 12 respectively, to lap against the upper and lower faces of theplate 1, and a bolt 13 is passed through the said oifset ends of theplate and is engaged by a nut 14, beneath the plate.

'lille bolt 8 before mentioned, passes through the bodies of the clips 9and 10,

through the bars 5 and G, and the plate 1, and is engaged by a nut 15 atits lower end. The extension 4 before mentioned, is provided at its freeend with a transverse series of openings 16, extending parallel with theopenings 3, and a clip 17 is provided for connecting the bar 7 to theextension.

The bar 7 is provided intermediate its ends and near its center with alongitudinal series of openings 18, and a bolt 19 is passed through thebody of the clip and one of the Specification of Letters Patent.

Application led May 1, 1913.

Patented Nov. 1 1., 1913.

Serial No. 764,817.

said openings. Another bolt 20 `is passed through the rear end of thesaid clip 17, the said rear end 'being odset downwardly to 'the face ofthe extension, and the said bolt 2O engages one of a series of openings16.

'The bar 7 is provided at each end with ,a longitudinal-ly extendingseries of openings 21 and L2 respectively, and straps or links 23 ,and24 connect the respective ends of the said bar 7 with the adjacent endsof the bars 5 Vand 6. The link 23 is provided with a longitudinal seriesof openings 25 at the en d adjacent to theV openings 21 of the` bar 7,anda bolt 26 is passed through one of the said openings, and aregistering `opening Aof theseries 21. The `opposite end of the link 23lis connected ,to the "adjacent end of the bar 5 by means of a bolt 27.

The link 24 is provided with a longitudinal series of openings 2S at theend adjacent to the bar 7, and a bolt 29 is passed through one of thesaid openings, `and through a registering opening of the series 22. Theopposite end 4of the link 24 `is oll'set downwardly to lap vlfgainst theupper face of the adjacent Venfd of the bar 6 ,and a bolt 30 connectsthe said end ,of the Abar to the link.

A link 3l has one of its ends connected to the opposite end of the bar 5from the Vlink 23 by means of a bolt'32, and an ordinary double-tree 33is connected intermediate its ends to the front end of the link by meansof the bolt 34. Swingle-trees and 36 of ordinary construction areconnected to the ends of the doubletree 33, by means of links 37.

A link 38 is connected to the opposite end of the bar 6, from the linkQ4 by means of a bolt 39, and the opposite end of the link is connectedto a bar 40, by means of a bolt 4l, the said bolt 41 engaging the bar 40at a point one-third of the length of the said bar from the inner end ofthe bar. A double-tree 33 corresponding to the double-tree 33 isconnected to the inner end of the bar 40 by means of a link 42, andswingle-trees EL and 36 are connected with the freeV ends of thedouble-tree 33 by means of links 43. A swingle-tree 44 is connected withthe outer end of the bar by means of a link 45.

The bar 5 is pivoted to the plate l at its center as is also the bar 6,while the bar 7 is adjustable with respect to the plate, the

said bar being connected to the extension, and laterally with respect tothe connection of the bars 5 and 6. rEhe pull on the swingle-trees and36 will cause the link 28 to push with equal force against the adjacentend of the bar '7, and the opposite end of the said bar 7 will pushagainst the ad jacent end of the bar 6 with approximately the same forceas the link 23 pushes against the opposite end of the bar 7.

The swingle-trees 35a and 36a are balanced lon the link 38 by theswingle-tree 44C on account of the arrangement of the bar 40. By theproper adjustment of the connection between the links 23 and 24 witht-he bar 7, and by the proper adjustment of the connection between thebar 7 and the eX- tension, the draft upon the respective ends of the bar6 is equalized so that when three draft animals are pulling against oneend of the bar 6 and two against the other end, all of the draft isequal on the two ends, and the said bar stands exactly transverse to theplate l. The plow will be directly behind the swingle-tree 35 and onlythe draft animal connected with the said swingle-tree wil be in thefurrow, the other four animals walking on the unplowed ground.

Clips 3a are rigidl connected to the rear end of the plate l orconnecting the said plate to the plow or other implement or Vehicle tobe drawn.

l. An equalizer comprising a plate for connection with the plow, saidplate having a lateral extension at the side adjacent to the plow, a barpivoted to the extension intermediate the ends of the bar, a pair ofbars pivoted to the plate intermediate the ends of the bars on a commonaxis, one of the said bars being of greater length and the said barbeing connected to the first-named bar at the end adjacent to theextension, the shorter bar being connected to the firstnamed bar at theopposite end from the extension, a double-tree connected to the free endof the shorter bar, and a bar connected to the free end of the longerbar, said lastnamed bar having a swingle-tree at its outer end and adouble-tree at its inner end and being connected to the longer bar at apoint one-third its length from the inner end.

f2. An equalizer comprising a plate for connection with the plow, upperand lower bars pivoted on a common axis intermediate their ends to theplate, the upper bar being of lesser length, a third bar arranged behindthe first-named bars and pivoted to the plate laterally with respect tothe connection of the first-named bars, a connection between the end ofthe longer bar adjacent to the connection of the last-named bar and theadjacent end of the said lastnamed bar, a connection between theopposite end of the shorter bar and the adjacent end of the last-namedbar, the free ends of the first-named bars having links connectedtherewith for engagement by draft apparatus, the link at the free end oftheV longer bar being adapted for connection with a draft barintermediate the ends thereof, and

lateral with respect to the center thereof.

ED'WARD R. SPELLMAN.

lVitnesses:

FRANK N. GLEIM, SOILANAR CARROLL.

Copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents, Washington, '.D. C. y

